40119931 has 2 divisors, whose sum is σ = 40119932. Its totient is φ = 40119930.

The previous prime is 40119923. The next prime is 40119953. The reversal of 40119931 is 13991104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40119931 - 2³ = 40119923 is a prime.

It is a super-2 number, since 2×40119931² = 3219217726889522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40119931.

It is not a weakly prime, because it can be changed into another prime (40119991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20059965 + 20059966.

It is an arithmetic number, because the mean of its divisors is an integer number (20059966).

Almost surely, 2^40119931 is an apocalyptic number.

40119931 is a deficient number, since it is larger than the sum of its proper divisors (1).

40119931 is an equidigital number, since it uses as much as digits as its factorization.

40119931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 40119931 is about 6334.0296020780. The cubic root of 40119931 is about 342.3366468433.

The spelling of 40119931 in words is "forty million, one hundred nineteen thousand, nine hundred thirty-one".